/*
 * This file is part of quickReminder, a software for gamers
 *
 * Copyright (C) 2006-2008 Lucas Romero
 *
 * This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along with this program; if not, see <http://www.gnu.org/licenses/>.
 */
using System;
using System.Collections.Generic;
using System.Text;
using System.Runtime.InteropServices;

namespace UserNotifier
{
    public class HWKeyboardBlink : WarnModule
    {
        [DllImport("NTKbdLites.dll")]
        private static extern IntPtr OpenKeyboardDevice(out IntPtr error);
        [DllImport("NTKbdLites.dll")]
        private static extern IntPtr CloseKeyboardDevice(IntPtr KbdHandle);
        [DllImport("NTKbdLites.dll")]
        private static extern IntPtr FlashKeyboardLight(IntPtr KbdHandle, uint LEDFLAG, int Duration);

        public override WarnModuleTypes Type
        {
            get { return WarnModuleTypes.HWKeyboardBlink; }
        }

        public override string Description
        {
            get
            {
                return Info.HWKbdDesc;
            }
        }

        private int m_Duration = 1000;

        public int Duration
        {
            get { return m_Duration; }
            set { m_Duration = value; }
        }
        private KeyboardLEDs m_LED = KeyboardLEDs.ScrollLock;

        public KeyboardLEDs LED
        {
            get { return m_LED; }
            set { m_LED = value; }
        }
        private UInt32[] m_KeyConstantsHW = { 4, 2, 1 };
        IntPtr KbdHandle = IntPtr.Zero;
        IntPtr ErrNum = IntPtr.Zero;

        public HWKeyboardBlink(int interval, KeyboardLEDs blinkled, int duration)
            : base(interval)
        {
            m_LED = blinkled;
            m_Duration = duration;
            DisableSleeping = true;
        }

        public HWKeyboardBlink()
        {
            
        }

        protected override bool InitDelegate()
        {
            KbdHandle = OpenKeyboardDevice(out ErrNum);
            return true;
        }

        protected override void Warn()
        {
            //try
            //{
                FlashKeyboardLight(KbdHandle, m_KeyConstantsHW[(int)m_LED], m_Duration);
                //FlashKeyboardLight(KbdHandle, m_KeyConstantsHW[(int)m_LED], WarnInterval);
            //}
            //catch
            //{
                //Stop();
            //}
        }

        protected override void CleanupDelegate()
        {
            if (KbdHandle != IntPtr.Zero)
            {
                CloseKeyboardDevice(KbdHandle);
                KbdHandle = IntPtr.Zero;
            }
        }

        public override void Test()
        {
            if (KbdHandle == IntPtr.Zero)
            {
                IntPtr hwnd = OpenKeyboardDevice(out ErrNum);
                FlashKeyboardLight(hwnd, m_KeyConstantsHW[(int)m_LED], m_Duration);
                CloseKeyboardDevice(hwnd);
            }
            else
                FlashKeyboardLight(KbdHandle, m_KeyConstantsHW[(int)KeyboardLEDs.CapsLock], 1000);
        }
    }
}
